C) Application Review the diagram of a second-grade student's work sample below . Students were asked to mark an X on each triangle; this is the response from one student. a) Identify/explain the student misconception/difficulty on this student work sample. b) What materials would you use to teach this concept to this child and what is your rationale for your choice of materials? c) Does this student have conceptual understanding of triangles? Why/why not? d) Why does conceptual understanding have to be in place for students to apply procedural fluency? X X X